Tetraflexagon

A Flexagon made with Square faces. Gardner (1961) shows how to construct a tri-tetraflexagon,

tetra-tetraflexagon,

and hexa-tetraflexagon.

References

Chapman, P. B. ``Square Flexagons.'' Math. Gaz. 45, 192-194, 1961.

Cundy, H. and Rollett, A. Mathematical Models, 3rd ed. Stradbroke, England: Tarquin Pub., p. 207, 1989.

Gardner, M. Ch. 1 in The Scientific American Book of Mathematical Puzzles & Diversions. New York: Simon and Schuster, 1959.

Gardner, M. Ch. 2 in The Second Scientific American Book of Mathematical Puzzles & Diversions: A New Selection. New York: Simon and Schuster, 1961.

Pappas, T. ``Making a Tri-Tetra Flexagon.'' The Joy of Mathematics. San Carlos, CA: Wide World Publ./Tetra, p. 107, 1989.

• Polytope
• Poncelet's Closure Theorem
• Poncelet's Continuity Principle
• Poncelet-Steiner Theorem
• Poncelet's Theorem
• Poncelet Transform
• Poncelet Transverse
• Pong Hau K'i
• Pons Asinorum
• Pontryagin Class
• Pontryagin Duality
• Pontryagin Maximum Principle
• Pontryagin Number
• Ponzo's Illusion
• Pop
• Population Comparison
• Population Growth
• Porism
• Porter's Constant
• Poset
• Poset Dimension
• Position Four-Vector
• Position Vector
• Positive
• Positive Definite Function